TEST_STRING_BUF_OFFSET
(TEST_STRING_BUF_OFFSET + 3 + strlen(TEST_STRING_DATA) + 1)
puf->e->pos += TEST_STRING_BUF_OFFSET;
puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
puf->e->pos += TEST_STRING_BUF_OFFSET;
puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
buf = e->start + TEST_STRING_BUF_OFFSET;